Google sketch -Up

Doing this Sketch up it was kind of hard to do but easliy for me to learn how to create  the object. Ask long as I knew how to use the tools then it was easliy for me to make the object. At a time I need help to push and pull my blocks out but it was easily at some point. The easliy part for me was to navigation the object around so I can see how to make my block look perfect like the example look.